Film-drying machine.



F. B. THOMPSON. FILM DRYING MACHINE.

APPLIOATION FILED JAN. ze, 1909. l 939,350,` 1 Patented N0v.9, 1909. a SHEETS-SHEET 1.

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F. B. THOMPSON.

FILM DRYING MACHINE. APPLICATION FILED JAN. za, 1909.

F. B. THOMPSON.

FILM DRYING MACHINE.

APPLICATION FILED JAN. ze, 1909.

Patented Nov. 9,1909.

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oIs,`A CoRroRATIoN `or ILLINOIS, L

Be it known that I, FREDBICK son; la citizen of the United States, and a resident of'Chicago, in thev .county of Cook and- Sta-teef illinois, have inventedv certain `new and useful Improvements in FilmDryture machines.

` means for carrying the film afterv one ofits faces has been coated ing Machines, of which the'follo l'ng' is a specification. y

` My invention relatesto anapparatus for ldrying continuous photographic films, such as are used in connectionA with moving pic- Its object is to provide until such coating sha-ll lhave dried. f

The invention may be embodied in a structure such as hereinafter described, and as illustrated in the accompany-ing draw-ings, in whichp Figure 1 is a detail vertical longitudinal 4section of the machine on the line 1-1 of Fig. 2, some of the parts being broken away;

Fig. 2 is a detail plan of the machine on a comparatively sma l scale; Fig. 3 is a detail plan of thev machine on a larger scale, some of the'parts being broken away and others beingomitted for the sake of clearness; Fig.

n', 4 is a detail sectional View on the line 44-4 `of Fig. 3.; and'Figs. 5 and 6fare transverse the end of one of the rollers, as shown the' vertical-sections on the line 5 5 and 646 respectivelyjof Fig. 3. i

The mach'ne is,gene`rally speaking,oblong rectangular in contour, and isprovided with a` suitable frame, shown asconsisting of corner uprights, aslO, v11, side sills:12,=13,-and

top rails 14, 15; The two sides of the frameA are united by cross rods, as16, -17. Mountedv upon this frame are two sets of rollers, one

set, designated by the 'numerals 18, 19 and 20,. being arranged along the top-fof the frame and journaled f in itssidef upright bars 14 and 15. The. other set of rollers, designated by the numerals 21, 22and 23, is-

journaled in the uprights and sills 12, 13. The members of the tw-o sets of rollers are preferably substantially in vertical alinement. A sprocket wheel 24 is mounted on end roller 18 of the upper set, for the purpose of receivin power for operating the machine. In or er to drive all of the rollers, those of one set, as shown the upper set, are connected together by a sprocket Chain 25 engaging sprocket teeth 26 formed on i Speciiicatin of Letters-Patent'. i

rhnnni'cx "Bf "rrioivison,v or ,einenGeog.,"ILIlIiJms,` Ays'sIGNc-in fnv DIRECT: -AND livrEsNn nssIoNii/IENTS, 'ro NATIQNAL 'WATERPROOF EILivI courait?, oIHCHICno'o; yIILLI-r thewseveral rollers oflthis set.- `Anv band` or tape 27 i runs upon lall of the rollers of theftwo sets `and is given many turns.

abouteachpair of rollers, onemember of each pair being in each of the two sets.

A tightening device is provided for the tape 27, and comprises a roller 28 carried by )an arm 29 adjustably fixed and projecting from one of the uprights 10. Tracing this tape from the tightening device as a stanting'point, it leads first over the end roller 18 and to the opposite end of the machine,

I "Patented Nov-,9. 1909 i Application ined .Ianuaryea i909. serial No.474,795. i.

turn-ing downwardly about the roller 20, as l `shown most plainly in Fig. 2. Leading rthence'to the roller 23 and making repeated turns aboutthese two rollers 20, 23, being wound spirally thereon. Reaching the opp-osite side ofthe machine, 'the tape 27 lea-ds tothe next lower roller 22 and is t'hen wound spinally aboutths roller and its companion 19 of the upper set. Reaching the opposite side of the machine, the tape .i's now ,led to the next adjacent lower roller 22 and in similar manner spirallywound about this roller vand the corresponding roller 19 ofthe upper set. Thus'the tape is led from pair topair `of. the rollers, the transfer from -one pair to thev next1 being made alternately at opposite -sides of the machine, and the number of rollers vin each set is such that the tape leavesl the lowest roller atthe `same =end at which it lstarted from the tightening device.

. Supplemental tightening devices areprovided for taking up the slack in `connection, witheach pair of rollers.. All of :these supplemental devices'being alike, but. one need be described. i Itl consists. of a pair of arms` 30,31: pivoted upon the trunnions'- of the lower roller as 22, and projecting upwardly,- v a'roller 32; beingjournaled in the upper ends offsuch Ypair of` arms andadapted to bear against the vinner face of the several turns of the tape about the pair of rollers with which this particular supplemental tightening device coperates. Retractile springs 33, 34 are attached to the frame of the machineI and to the arms 30 and 31, and drawing them away from the perpendicular, forcing the roller 32 against' the tape and consequently l drawing its several turns taut.

The several turns of the pair of rollers are spaced. apart by guiding rods 35, 36,

Awhich may be conveniently carried by the cross-bars 16, 17 of the machine. In Fig. 2

of the drawings no attem t has been made to illustrate the lower set o Athese guide rods, in order that confusion might be, avoided and in -Figs?) this lower set has not been fully illustrated for the same reason. A

The roller 18 beingl turned by the application -of power to the sprocket wheel 24, all of the rollers of the upper set are turned through the medium ofthe sprocket chain 25, the rollers of the lower set being turned by" theafirictional engagement of the tape itselfv- The machine is used in conjunction with a film coating apparatus, not illustrated, but which will deliver the film, here represented by the dotted line 37, to the tape 27 adjacent the tightening roller 28. The end of the film may-be secured to the ta e' in any desired manner, as by means o a pin. The machine being set in motion, the lm is carried with the tape, in its many turns about the several sets of rollers and by the time it reaches the end of the machine at which' it was received, its coating will have become completely dried so that it is ready for use. It will therefore be separated from the tape below the tightening roller 28 and may be wound upon a spool, not shown, or other-` wise taken care of.

The' size of the machine here shown and described vmay, of course, be varied at pleasure either bywidening it or increasing the number of pairs of rollers. The distance between the upper andlower set of rollers must be kept within limits to avoid any tendency of the several turns of the tape and film to interfere.

While the preferred form of the machine, and one which has been found highly successful, has been shown and described, other forms may be employed which come within the scope of the invention.

What I claim is:

1. In a film-drying machine, in combination, a plurality of rollers and a; continuous film carrying tape running on the rollers and having oneof its faces only in contact therewith.

2. In a film-drying machine, in combination, a pair of rollers, and a continuous film carrying ta e running on such rollers and being wound spirally about them as a pair.

3. In a film-dryin machine, in combination, a pair of ro'ers, a continuous film carrying tape running on such rollers and being wound spirally about them as a pair, and guides interposed between the several turns of the tape.

4. In a film-drying machine, in combination, a plurality of rollers, a film carrying tape running on the rollers and having one of its faces only in contact therewith, and means for driving the rollers.

l V5. In a film-drying machine, in combination, a plurality of rollers arranged in pairs,

and a film carrying tape wound spirally around each pair of rollers, one of its faces being always outward.

6.` In a film-drying machine, in combination, a plurality of rollers arranged in pairs, a film carrying tape wound spirally around eachpair of rollers, one of its faces bein always outward, and spacing rods locate between the several turns of the tape.

7. In a film-drying machine, in combination, a frame, rollers mounted on the frame and being, arranged -in pairs, guide rods transverse to the rollers and located between the members of each pair, and a tape running on the various rollers and being wound spirally around each pair thereof and passing between the guide rods.

' 8. In a film-drying machine, in combination, a frame, two sets of parallel rollers journaled in the frame, a sprocket. chain engaging the several members of one set of rollers, guide rods located adjacent each set of rollers and transverse thereto, and an endless film carrying tape running on the several rollers and being Wound spirally around pairs thereof, the several turns of the tape being between the guide rods.

9. In a film-drying machine, in combination, a plurality of pairs of rollers, and a continuous film-carrying tape traversing all l the'rollers, such tape being wound spirally .around each pair of rollers and having one of its faces always outward.

10. In a film-drying machine, in combination, a plurality of airs of rollers, and a continuous film-carrying tape traversing all the rollers, such tape being wound spirally around each pair of rollers.

FREDRICK B. THOMPSON.

TWitnesses:

LOUIS K. GniLsoN, CHARLES B. GlLLsoN. 

